Dear student,
No, IIM's doesn't offer event management.
I am providing you the top B-schools which offer event management in India
You can go for this colleges

• IIFT Delhi.
• School of film and mass communication Allahabad
• MMCC Pune
• The media institite Mumbai
• National institute of design Ahmedabad
• International media institite Gurgaon

This are the list of top event management colleges

• Good luck